Problem Solving with Slope

The scatter plot shows the the cost of gas per gallon during certain years.

What is the equation for the trend line in slope-intercept form.

• y = .25x + .05

• y = .05x + .25

• y = x + .25

• y = 2x + 1.5x + .25

The scatter plot shows the the cost of gas per gallon during certain years.

How can the trend line equation be used to predict the cost of gas per gallon in the year 1992?

• Substitute 92 for x in the equation

• Substitute 92 for y in the equation

• Substitute 22 for x in the equation

• Substitute 22 for y in the equation

Tags

CCSS.HSF.BF.A.2

The scatter plot shows the the cost of gas per gallon during certain years. Paul want to know when gas would have cost about $1.50 per gallon. What step should he take?

• Substitute 1.50 for y in the equation

• Add 1.50 to the y-intercept of the equation

• Substitute 1.50 for x in the equation

• Add 1.50 to the slope of the equation

Tags

CCSS.HSF.BF.A.2

The scatter plot shows the the cost of gas per gallon during certain years.

Use the trend line equation to predict the cost of gas per gallon in 2017.

• $3.50

• $2.60

• $1.70

• $4.40

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

What is the slope of the line, in the standard (x,y) coordinate plane, that is parallel to x + 5y = 9 ?

• -5

• -1/5

• 1/5

• 9/5

• 9

Tags

CCSS.8.EE.B.5

Which of the following situations does not have the same unit rate as the graph shown?

• Asher buys gum for $0.20 a piece.

• A daycare has six workers for every 30 children.

• Melanie reads 9 pages of her book every 45 minutes.

• Richie earns $10 every 2 hours to pet sit for his neighbor.

Tags

CCSS.6.RP.A.3A

Using the graph, determine the equation of the line.

• y = 5x

• y = 10x

• y = 1/5x

• y = 1/10x

Tags

CCSS.8.EE.B.5

A line is perpendicular to    y = 2x - 7.
What is the slope of this line? 

• -2

• 1/2

• -1/2

• 2

Tags

CCSS.8.EE.B.6

• Positive

• Negative

• Zero

• Undefined

Tags

CCSS.8.EE.B.5

A line is perpendicular to    -2x+y = - 7.
What is the slope of this line? 

• -2

• 1/2

• -1/2

• 2

Tags

CCSS.8.EE.B.6